WF200 chip works with 16-bit words over SPI, so use that word
size if available. This avoids a bounce buffer usage for
little-endian hosts.
Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
---
drivers/staging/wfx/bus_spi.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/wfx/bus_spi.c b/drivers/staging/wfx/bus_spi.c
index 2b108a9fa5ae..c5f78161234d 100644
--- a/drivers/staging/wfx/bus_spi.c
+++ b/drivers/staging/wfx/bus_spi.c
@@ -175,9 +175,12 @@ static int wfx_spi_probe(struct spi_device *func)
struct wfx_spi_priv *bus;
int ret;
- if (!func->bits_per_word)
- func->bits_per_word = 16;
+ func->bits_per_word = 16;
ret = spi_setup(func);
+ if (ret == -EINVAL) {
+ func->bits_per_word = 8;
+ ret = spi_setup(func);
+ }
if (ret)
return ret;
// Trace below is also displayed by spi_setup() if compiled with DEBUG
--
2.20.1
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